To find your zip code on Google Maps, you can use the "ZIP Codes map tool" provided by randymajors.org. Here are the steps:

1. Go to the ZIP Codes map tool website.
2. Type your address or place in the "Search places" box just above the map.
3. The map will show the ZIP Code boundaries around your location, and you can click on the map to see the ZIP Code for a specific area.
4. You can also click the "Colorize" button in the lower left corner of the map to color in the ZIP Code areas, and show ZIP Code labels, US city limits, US townships, and county lines by checking the boxes in the lower left corner of the map.

Alternatively, you can use the "What ZIP Code am I in" tool provided by randymajors.org to find your current ZIP Code based on your device location. This tool shows your current ZIP Code on Google Maps, and a red marker will show your location on the map.

Another option is to use the "What is my Zip Code" tool provided by mapdevelopers.com. This tool can find your ZIP Code based on your current location or any address or point clicked on the map. However, note that searching for a city may not give you a result as there are many ZIP Codes within a city, and the tool may not be accurate enough for legal or surveying purposes.